1222664997 has 8 divisors (see below), whose sum is σ = 1630831744. Its totient is φ = 814804128.

The previous prime is 1222664959. The next prime is 1222665011. The reversal of 1222664997 is 7994662221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1222664997 - 2¹¹ = 1222662949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222664957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66973 + ... + 83250.

It is an arithmetic number, because the mean of its divisors is an integer number (203853968).

Almost surely, 2^1222664997 is an apocalyptic number.

It is an amenable number.

1222664997 is a deficient number, since it is larger than the sum of its proper divisors (408166747).

1222664997 is a wasteful number, since it uses less digits than its factorization.

1222664997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152939.

The product of its digits is 653184, while the sum is 48.

The square root of 1222664997 is about 34966.6269033775. The cubic root of 1222664997 is about 1069.3072048926.

The spelling of 1222664997 in words is "one billion, two hundred twenty-two million, six hundred sixty-four thousand, nine hundred ninety-seven".